import Vue from "vue";
import Router from "vue-router";
import routes from "./routers";
import store from "@/store";
import iView from "iview";
import {canTurnTo, setTitle} from "@/libs/util";
import config from "@/config";

const {homeName} = config;

Vue.use(Router);
const router = new Router({
  routes,
  mode: "history"
});
const LOGIN_PAGE_NAME = "login";

const turnTo = (to, access, next) => {
  if (canTurnTo(to.name, access, routes)) next(); // 有权限，可访问
  else next({replace: true, name: "error_401"}); // 无权限，重定向到401页面
};

router.beforeEach((to, from, next) => {
  iView.LoadingBar.start();
  if (!sessionStorage.jwttoken && to.name !== LOGIN_PAGE_NAME) {
    // 未登录且要跳转的页面不是登录页
    next({
      name: LOGIN_PAGE_NAME // 跳转到登录页
    });
  } else if (!sessionStorage.jwttoken && to.name === LOGIN_PAGE_NAME) {
    // 未登陆且要跳转的页面是登录页
    next(); // 跳转
  } else if (sessionStorage.jwttoken && sessionStorage.user && to.name === LOGIN_PAGE_NAME) {
    // 已登录且要跳转的页面是登录页
    next({
      name: homeName // 跳转到homeName页
    });
  } else {
    next();
    /*
    // 先不做那么复杂，权限的判断主要在后台，前台只要控制列表是否展示即可
    if (store.state.user.hasGetInfo) {
      turnTo(to, store.state.user.access, next);
    } else {
      store.dispatch("getUserInfo").then(user => {
        // 拉取用户信息，通过用户权限和跳转的页面的name来判断是否有权限访问;access必须是一个数组，如：['super_admin'] ['super_admin', 'admin']
        turnTo(to, user.access, next);
      }).catch(() => {
        setToken("");
        next({
          name: "login"
        });
      });
    }
    */
  }
});

router.afterEach(to => {
  setTitle(to, router.app);
  iView.LoadingBar.finish();
  window.scrollTo(0, 0);
});

export default router;
